CN101517541B - System and method for connecting SAS RAID controller device channels across redundant storage subsystems - Google Patents
System and method for connecting SAS RAID controller device channels across redundant storage subsystems Download PDFInfo
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- 239000004606 Fillers/Extenders Substances 0.000 claims description 93
- 238000004891 communication Methods 0.000 claims description 32
- 239000003999 initiator Substances 0.000 claims description 6
- 238000005538 encapsulation Methods 0.000 claims 6
- 238000006880 cross-coupling reaction Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 6
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0658—Controller construction arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0616—Improving the reliability of storage systems in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
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Abstract
The present invention provides a system comprising a first expander device and a second expander device. The first expander device and the second expander device comprise a subtractive port and a table mapped port and are suitable for coupling a first serial attached SCSI controller to a second serial attached SCSI controller. The first and second expander devices are cross-coupled via a redundant physical connection.
Description
Technical field
Present invention relates in general to field of data storage, relating more specifically to a kind of system and method connecting Serial Attached SCSI (SAS) (SAS) RAID controller device channels for crossing redundant storage subsystems.
Background technology
Serial Attached SCSI (SAS) (SAS) is a kind of memory interface being applicable to provide full-duplex high-speed to communicate.In typical SAS RAID environment, the SAS RAID controller of redundancy resides in single storage enclosure.In this case, the impaired or fault of this RAID controller may will be repaired or replace before operation of the storage subsystem can resume.And when this RAID array can provide redundancy for data, in this subsystem, the impaired or fault of other parts may cause data to store and to access.In addition, the RAID controller in subsystem can the fault such as local damage of fragile one-tenth subsystem level, cable fault, power surges, and the analogue only affecting this subsystem.Therefore, may need to place each SAS RAID controller in different storage subsystem.But, crossing the controller interconnection of different sub-systems under SAS environment, needing to consider route and address maps restriction for providing terminal device to interconnect.Specifically, must provide the subsystem that the mutual controller of robust (robust), redundancy connects between two or more controllers, it can not run counter to route and the address maps restriction of basic SAS expander equipment.
Therefore, if provide the system and method for the SAS RAID controller apparatus interconnection crossing redundant storage subsystems to exist, will be favourable.
Summary of the invention
Correspondingly, different embodiments of the invention are to being applied to the system and method crossing redundant storage subsystems interconnect serial and connect SCSI (SAS) raid-array (RAID) controller device channels.According to an embodiment of the invention on the one hand, the system for crossing redundant storage subsystems interconnection SCSI RAID controller device channels is related to.System according to an embodiment of the invention, can comprise at least two SAS controller, and each is arranged in different storage subsystem, and at least two extender devices.Each in described at least two extender devices can be coupled to one in this at least two controller.Each in described at least two extender devices also can be intercoupled by redundant physical connection.System can allow this SAS expander equipment still to have redundant wide SAS physical interconnection by least two independences to carry out cross connection according to an embodiment of the invention, this interconnection can by subtract each other this two extender devices wide with table mapped port outside twice two (x2) Bu Tong rightly to connect to form.System goes for providing interconnect fail-over to protect.Such as, the edge expanders port mapped with table that subtracts each other separately crossing two separate physical interconnects is connected and can allows to be formed at least two wide interconnect fail-over subtracting each other and show mapping edge expanders cross connect ports.
According to another embodiment of the present invention, the system providing SCSI RAID controller device channels to interconnect for crossing redundant storage subsystems is related to.Method can comprise provides the first extender device being positioned at the first storage subsystem and the second extender device being positioned at the second storage subsystem, respectively there is a subtractive port and a table mapped port, being connected by the first redundant physical is connected in the described table mapped port of described second extender device by the described subtractive port of described first extender device, is connected the described subtractive port of described second extender device is connected in the described table mapped port of described first extender device with by the second redundant physical.The method can provide at least two wide subtracting each other and show mapped expander device cross connect ports, and is applicable to and provides interconnect fail-over to protect.
Total volume description before easy understand and detail hereinbelow describe and are all only exemplary and explanatory, are not limit the present invention asked.Accompanying drawing constitutes a part for instructions integratedly, describes the embodiment of the present invention, and together with described total volume description, is used for explaining principle of the present invention.
Accompanying drawing explanation
Those skilled in the art's reference below accompanying drawing can be easier to understand multiple advantage of the present invention:
Fig. 1 is the block scheme of the expander device interconnect system according to the present invention one one exemplary embodiment;
Fig. 2 is the block scheme of the SAS RAID controller system comprising expander device interconnect system according to the present invention one one exemplary embodiment;
Fig. 3 is the block scheme of another embodiment comprising the SAS RAID controller system of expander device interconnect system according to the present invention one one exemplary embodiment; With
Fig. 4 is the process flow diagram of the method according to the present invention one one exemplary embodiment.
Specific embodiments
Now for currently preferred embodiments of the invention provide detailed reference, in the accompanying drawings its citing is described.
With reference to Fig. 1, show the block scheme of the expander device interconnect system 100 according to the present invention one one exemplary embodiment.System 100 can use the structure of Serial Attached SCSI (SAS) (SAS), or the structure of similar applicable support full-duplex data transmission realizes.SAS can relate to the point-to-point serial line interface be applicable to the every direction of every passage 3 gigabits (Gb/s) per second or higher full-duplex communication.In certain embodiments, message transmission rate can reach 6Gb/s or higher.Can be small computer system interface (SCSI) by the agreement of SAS interface communication, Enhanced Technology optional equipment (ATA), SAS management or similar agreement.SAS structure can comprise equipment, such as terminal device and extender device.Terminal device can be such as SAS initialization apparatus, SAS target device and serial ATA (SATA) equipment.Extender device can comprise edge expander device, edge expander device group and fan-out extender.SAS equipment, such as terminal device and extender device, can interconnect for transmitting extendible memory space under SAS environment.SAS equipment interconnects with point-to-point link in one group of SAS domain usually.SAS equipment can comprise at least two connections equally and be used for strengthening enforceability and reliability.In the interconnection of SAS equipment or SAS domain, each logic to node connects and is set to through port.Single port can comprise multiple point-to-point link, and it can be noted as Physical layer.Such as common media device, as disc driver, can comprise two ports, each port comprises at least one Physical layer.In addition, multiple Physical layer can be set together composition port, allows multiple concurrent connection establishment.Such port can be noted as wide port.
System 100 can comprise at least two extender devices 102,104, and they have the outside port being applicable to connect SAS end equipment.Extender device 102 can comprise subtractive port 106 and table mapped port 110, and extender device 104 can comprise subtractive port 108 and table mapped port 112.Extender device 102,104 can be coupled mutually by redundant physical connection 114.Particularly, the SAS physical interconnections that the system 100 of one embodiment of the invention can allow described two extender devices still to have redundant wide by least two independences carries out cross connection.Interconnection can be cable or route, and each can this two extender devices wide subtract each other and show outside mapped port by two wide differences to link or connect to form.Difference can utilize different signaling to link, and wherein signal by transmitting the driving arrangement transmission of interrogation signal on two lines at a pair.In different signaling, the signal detected at receiving end can be the voltage difference between this two line.Wide link can be 2 times of (x2) wide links.In the present example, full redundancy 4 times of (x4) SAS external cables can use between the table mapped port of the first extender device and the subtractive port of the second extender device.Like this, system 100 goes for as redundant storage subsystems provides interconnect fail-over to protect.Such as, suppose that separately this subtracts each other and show to map the connection intersected on two separate physical interconnects of edge expanders port, can allow to cause the interconnect fail-over subtracting each other and show mapping edge expanders cross connect ports that at least two wide.System 100 may further include at least dual serial and connects scsi controller, and these at least two extender devices 102, and in 104, each can be coupled on this that at least dual serial connects in scsi controller.
Suppose expander device 102,104 can be edge expander device or are similarly suitable for using the extender device reaching 128SAS address communication.Edge expander device can make connection setup between the node being directly connected to this edge expander device.According to the description of SAS, edge expanders can comprise the subtractive port that sends information, and it is not correspondingly that this extender device is connected Extended Capabilities Port storage routing table with multiple table mapping.The larger traffic between SAS equipment can be realized like this.Table mapped port can all SAS orders of route to the target be namely registered in discovery time in this edge-expander domain chart or initiator.Subtractive port is used when can attempt the SAS equipment of searching address not in this territory chart in target or initiator.Such as, if SAS node sends connection request to this edge expanders, require that one is not the node being directly connected to this edge expanders, this request can be sent by this subtractive routed port.
In some embodiments according to system 100 of the present invention, each subtractive routed port of this edge expanders can be connected on a fan-out extender.This fan-out extender can comprise routing table, and goes for determining that correct edge expanders is to send this request, the edge expanders that such as this requested node directly connects.Extender device such as edge expanders can retain a direct routing table, and it is applicable to the association SAS address differentiating to be coupled to this edge expanders.Edge expanders can utilization table or subtractive route carry out designated frame and issues and can be removed by this edge expanders the Physical layer exceeding one-level further.According to the embodiment of system 100 of the present invention, extender device can utilize an internal table of addresses to carry out routing frame to auxiliary device (table route).Table port can provide table addressing, is generally used in this port when being connected to the extender device can after another with multiple equipment.More low-level edge expanders can use direct routing directly to transmit frame to attached SAS disk devices.In the process, the routing table size of each extender device can minimize by needing the mode retaining all effective addresses for all memory devices be included in subsystem.Such as, the first communication link utilizing different signaling and the second communication link utilizing different signaling can be included in each cable.This second communication link may be used between subtractive port and table mapped port, provide in " directly " communication or " Failure Transfer " communication, this receiving port detects or solves an only port address, even if two different communication links become possibility like this.Connect subtracting each other and show mapped port and cross connection may being related to of at least two extender devices.Subtracting each other and showing mapped port of cross connection at least two extender devices can set up the communication of accessible port in some SAS equipment between each by multiple SAS equipment.In addition, this subtract each other and show mapped port direct cross connection can not give same address expose multiple path or set up data loopback.
This first extender device 102 and this second extender device 104 can be adopt closely similar mode to be connected by redundant physical the communicative couplings that 114 provide analogous interconnection.It can be the cable assembly realized by a port or opening connector more than two that redundant physical connects 114.Connector and cable assembly can be connected and reach four physical SAS links.In one embodiment, the first cable 114 can be included in the communication link between the first subtractive port 106 and the second table mapped port 112.Second cable 114 can comprise the communication link for be coupled communicatedly the first table port one 10 and the second subtractive port 108.Redundant physical connection can provide the cross-communication between the subtractive port 106 of the first extender device 102 and the table mapped port 112 of the second extender device 104 and between the subtractive port 108 of the second extender device 104 and the table mapped port 110 of the first extender device.In one embodiment, the interconnection of the first and second extender devices 102,104 can provide two two-port, and to allow in described cable one to lose or communication under failure condition.
With reference to figure 2, show the block scheme comprising the SAS controller system 200 of extender interconnection system 100 according to one exemplary embodiment of the present invention.System 100 can provide interconnection for the first edge expanders 106 being arranged in the first storage subsystem 202 with the second edge expanders 108 being arranged in the second storage subsystem 204, to allow the controller interconnection of crossing redundant storage subsystems.SAS controller system 200 can comprise at least two SAS controller 206,208.Controller 206,208 can be SAS initiator or main equipment.Such as, controller 206,208 can be raid-array (RAID) controller.In one embodiment, the first storage subsystem 202 can comprise the first RAID controller 206.Second storage subsystem 204 can comprise the second RAID controller 208.The interconnection system 100 that the first extender device 102 in first storage subsystem 202 and the second extender device 104 in the second storage subsystem 204 can be supposed by the present invention is coupled communicatedly.Interconnection can allow by the first RAID controller 206 and the second RAID controller 208, and data storage drive target is in the first array or the second array.In present example, this controller 206,208 can by SAS protocol operation.In the present example, form the described separate hardware of described edge expanders, such as integrated circuit, can broadly similar.
Each SAS controller can be coupled to SAS fan-out unit or extender device.In Fig. 2 example, SAS controller 206 can be coupled to SAS expander equipment 102, and SAS controller 208 is coupled to SAS expander equipment 104.SAS expander equipment 102,104 is coupled mutually by least two Redundant physical connection 114.This system 200 can allow the redundancy activation of many storage subsystems to control the impact controlled data storage device in this system with minimization system level failure.This system 200 can by process may be encapsulated in the individual redundant controllers in the single subsystem in different shell and minimize the error of controller.In the present example, this system 200 comprises the first storage subsystem 202 and the second storage subsystem 204.Each in this first subsystem 202 and the second subsystem 204 comprises the array of memory device respectively.The supposition of several data memory device can be realized by those skilled in the art.In addition, the array of memory device can be configured as the redundancy with different brackets, and such as RAID-1/10 configuration, RAID-5 configures, and the configuration of similar needs.
With reference to Fig. 3, show the block scheme of another embodiment comprising the SASRAID controller system 300 of expander device interconnect system according to one exemplary embodiment of the present invention.As shown in Figure 3, system 300 can be suitable for utilizing the SAS expander of half full duration (x4) outside connection to provide half width (x2) SAS subtractive port to connect from each.Therefore, system 300 can allow full-width external inter-controller connect or from the full redundancy cable subtracting each other and show map view.System 300 can allow the redundancy activation of multiple storage subsystem to control the impact controlled data storage device in this system with minimization system level failure.System 300 also can by process can be encapsulated in the redundant manipulator in the single subsystem in different shell and minimize the error of controller.In the present example, system 300 can comprise the first storage subsystem 302 and the second storage subsystem 304.Each in first subsystem 302 and the second subsystem 304 can comprise memory device 306, at least one RAID array of 308 individually.The supposition of several data memory device can be realized by those skilled in the art.In addition, memory device 306, the array of 308 can be configured as the redundancy with different brackets, and such as RAID-1/10 configuration, RAID-5 configures, and the configuration of similar needs.
First storage subsystem 302 can comprise the first controller 206, and the second storage subsystem 304 can comprise second controller 208.Controller 206,208 can be the RAID controller of such as SAS RAID controller.In the embodiment of system 300, this controller 206,208 can by SAS protocol operation.Storage subsystem 302, each in 304 may further include at least two edge expander device 310,312,314,316.In the present embodiment, form the described separate hardware of this edge expanders, such as integrated circuit, can be similar substantially.Easy understand different software configures, such as, be routing table and the route data subtracted each other of propelling table route, can be included in the edge expanders based on relevant different edge expanders interconnection, or be dynamically provided by SAS master/initiator device.Such as, the routing table between this edge expanders be table route and subtractive route based on system in the integrated level of this edge expanders change.In other embodiments, this individual edge expander hardware can change according to design preference.
This RAID controller 206 of storage subsystem 302 can be connected to edge expanders 310, on 312 communicatedly by direct routing SAS mode.Edge expanders 310,312 can be coupled to the memory device in this storage subsystem 302 communicatedly.Such as, edge expanders 310,312 can be coupled to each of the data equipment (data driver " 1 " is marked to " N ") be included in storage subsystem 302, in order to allow the mode showing route SAS individually by such as showing the table ports of port 320 and 322.Therefore, data can pass through these at least two edge expanders 310, and one in 312 sends.Additional table port can be included in this edge expander device 310, in 312 on demand.Storage subsystem 304 can comprise at least two edge expander device 314,316, and storage subsystem 304 can be undertaken by the mode with storage subsystem 302 broadly similar arranging and configuring.
Continue with reference to figure 3, by described SAS RAID controller 206, edge expanders 310,312 can be coupled so that allow this data storage drive target in the first array or the second array communicatedly, and by described SAS RAID controller 208, edge expanders 314,316 can be coupled one that allows data storage drive target in the first array or the second array communicatedly.As shown in Figure 2, in the present invention, full redundancy x4 (4 times) SAS external cable can be implemented between the table port 324 of edge expanders 310 and the subtractive port 326 of edge expanders 314.Each that it will be appreciated by those skilled in the art that edge expanders 310,312,314,316 in present example can comprise independent subtractive port to send the order not corresponding to the routing table stored for this edge expanders.In mode above, be edge expanders 310,312,314, the size that in 316, the routing table of each prepares minimizes by needing the mode retaining all effective addresses for all memory devices be included in subsystem.Such as, the first communication link utilizing different signaling and the second communication link utilizing different signaling can be included in each in cable 332,334,336 and 338.This second communication link may be used between subtractive port and table mapped port, provide in " directly " communication or " Failure Transfer " communication.Those skilled in the art can understand word " Failure Transfer " and to be coupled with may comprising cross-communication different subtractive port and table mapped port, receiving port is detected or solves an only port address, even if two different communication links become possibility.Such as, first cable 332 can comprise a communication link with the table mapped port 332 of the subtractive port 330 of the extender device 310 that is coupled communicatedly with extender device 314, and also can comprise second communication link to be provided in the cross-communication between the table mapped port 324 of edge expanders 310 and the subtractive port 326 of edge expanders 314.Second cable 334 can comprise a communication link with the subtractive port 326 of the table mapped port 324 of the edge expander device 310 that is coupled communicatedly with edge expander device 314, equally, the cross connection communicated between the subtractive port 330 of edge expanders 310 and the table mapped port 332 of edge expanders 314 is provided in.In one embodiment, edge expanders 310, the interconnection of 314 can allow port between two and even allow in the cable one to lose or fault environment under communication.Can suppose further, edge expanders 312 and 316 can carry out being coupled to provide analogous interconnection with similar manner substantially communicatedly.
With reference to Fig. 4, relate to the high speed SAS RAID controller device channels interconnecting method 400 providing and cross redundant storage subsystems.Method can comprise the first extender device 402 of providing and being positioned at the first storage subsystem and provide the second extender device 404 being positioned at the second storage subsystem, and described first extender device and the second extender device respectively have a subtractive port and a table mapped port.Method is comprised further and connects the described subtractive port of described first extender device and the described table mapped port 406 of described second extender device, with the table mapped port 408 of the subtractive port and described first extender device that are connected described second extender device by the second redundant physical by the first redundant physical connection.Method crosses at least two cross-coupled wide ports of storage system to provide interconnect fail-over by providing at least four.Wide port can be subtract each other and show mapped wide ports.Wide subtracting each other and show mapped port can be 2 times of wide ports, has two accessible port for interconnecting.Can suppose that wide port can provide the accessible port of interconnection further.Method can be suitable for providing the high speed serialization crossing redundant storage subsystems to connect the interconnection of SCSI (SAS) raid-array RAID controller device channels.
Easy understand, the different software configuration such as sending the routing table of table route and subtractive route data can be included in the edge expanders based on relevant different edge expanders interconnected relationship or by SAS master/initiator device and dynamically provide.Such as, the routing table between this edge expanders based on system in the table route of integrated level of this edge expanders and subtractive route and change.In other embodiments, this individual edge expander hardware can change according to design preference.
Be appreciated that the detailed sequence of the step in described revealed method and level are the examples of exemplary method.Based on design preference, be appreciated that the detailed sequence of step in the method and level can reset and retain within the scope of the invention.With the key element that each step of single order shows in claim to a method subsequently, be not intended to be limited to detailed sequence or the level of this performance.
Can be sure of by describing easy understand system of the present invention and its advantage presented above.The appearance can be sure oing pro forma various change is equally obvious, wherein element structure and arrange and do not deviate from scope of invention and spirit, do not sacrifice the substantial advantage that they are all.Here be only its one exemplary embodiment in previously described form.Claim is below intended to hold and comprise such change.
Claims (17)
1., for crossing a system for redundant storage subsystems interconnection SCSI RAID controller device channels, comprising:
One first extender device; And
One second extender device, described first extender device and the second extender device respectively comprise a subtractive port and a table mapped port, and are applicable to one first Serial Attached SCSI (SAS) controller to be coupled to one second Serial Attached SCSI (SAS) controller,
Wherein said first extender device is connected cross-couplings with described second extender device by a redundant physical,
The described subtractive port of described first extender device is coupled to the described table mapped port of described second extender device, and the described subtractive port of described second extender device is coupled to the described table mapped port of described first extender device.
2. system as claimed in claim 1, wherein said first Serial Attached SCSI (SAS) controller is coupled to described first extender device, and described second Serial Attached SCSI (SAS) controller is coupled to described second extender device.
3. system as claimed in claim 1, the order from described Serial Attached SCSI (SAS) controller is sent to and is registered to a target in an extender device territory chart or initiator when finding by wherein said table mapped port.
4. system as claimed in claim 1, wherein said first extender device and described second extender device are edge expander device.
5. system as claimed in claim 1, wherein said first extender device is arranged in one first storage subsystem, and described second extender device is arranged in one second storage subsystem.
6. system as claimed in claim 5, wherein said first storage subsystem is in one first encapsulation, and described second storage subsystem is in one second encapsulation.
7. system as claimed in claim 1, wherein said first extender device and described second extender device are coupled to a data driver individually, and this data driver is included in the multiple data drivers be made up of SAS RAID array.
8., for crossing a system for redundant storage subsystems interconnection SCSI RAID controller device channels, comprising:
One first storage subsystem, comprising:
One first Redundant Array of Independent Disks controller; With
One first extender device, described first extender device is coupled to described first RAID controller communicatedly and comprises a subtractive port and a table mapped port further;
One second storage subsystem, comprising:
One second Redundant Array of Independent Disks controller; With
One second extender device, described second extender device is coupled to described second RAID controller communicatedly and comprises a subtractive port and a table mapped port further;
One first communication link, its coupling described subtractive port of described first extender device and described table mapped port of described second extender device; With
One second communication link, its coupling described subtractive port of described second extender device and described table mapped port of described first extender device, wherein said first communication link and described second communication link are applicable to provide interconnect fail-over, cause at least two cross-coupled wide subtractive port and wide table mapped port.
9. system as claimed in claim 8, wherein said first extender device and described second extender device are configured and configure in order to control the multiple data drivers be included in a described SAS RAID array and described 2nd SAS RAID array.
10. system as claimed in claim 8, wherein this first communication link and this second communication link are included in a physical cables.
11. systems as claimed in claim 8, wherein this first storage subsystem is in one first encapsulation, and the second storage subsystem is in one second encapsulation.
12. systems as claimed in claim 8, wherein said first extender device and described second extender device are coupled to a data driver in the multiple data drivers be made up of SAS RAID array individually.
13. 1 kinds, for crossing the method for redundant storage subsystems interconnection SCSI RAID controller device channels, comprising:
There is provided one first extender device being positioned at one first storage subsystem and one second extender device being positioned at one second storage subsystem, described first extender device and described second extender device respectively have a subtractive port and a table mapped port;
The described table mapped port described subtractive port of described first extender device being connected to described second extender device is connected by one first redundant physical; With
The described table mapped port described subtractive port of described second extender device being connected to described first extender device is connected by one second redundant physical.
14., as the method for claim 13, comprise further and provide at least four cross-coupled wide ports with described first storage subsystem and described second storage subsystem of being interconnected.
15. as the method for claim 13, and wherein said first edge expanders and described second edge expanders are configured in order to utilize the described multiple data driver execution table routes be included in a described SAS RAID array.
16. as the method for claim 13, and wherein said first edge expanders and described second edge expanders are configured in order to be communicated together with table route by subtractive route.
17. as the method for claim 13, and wherein said first storage subsystem is in one first encapsulation, and described second storage subsystem is in one second encapsulation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/545,872 | 2006-10-10 | ||
| US11/545,872 US7958273B2 (en) | 2006-10-10 | 2006-10-10 | System and method for connecting SAS RAID controller device channels across redundant storage subsystems |
| PCT/US2007/021613 WO2008045457A2 (en) | 2006-10-10 | 2007-10-10 | System and method for connecting sas raid controller device channels across redundant storage subsystems |
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| Publication Number | Publication Date |
|---|---|
| CN101517541A CN101517541A (en) | 2009-08-26 |
| CN101517541B true CN101517541B (en) | 2015-05-13 |
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| CN200780034024.7A Expired - Fee Related CN101517541B (en) | 2006-10-10 | 2007-10-10 | System and method for connecting SAS RAID controller device channels across redundant storage subsystems |
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| US (1) | US7958273B2 (en) |
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| JP6414834B2 (en) * | 2014-11-11 | 2018-10-31 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | SAS system, SAS system traversal method and apparatus |
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| US20080162987A1 (en) | 2008-07-03 |
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| WO2008045457A3 (en) | 2008-06-26 |
| GB2455459B (en) | 2011-04-06 |
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